Pump.



J. P. WARNER.

PUMP.

APPLICATION FILED JAN. 29, 1912.

1,079,308. Patnted Nov. 18, 1913.

INVENTOR Joan J WARNER.

= ATTORNEY COLUMBIA PLANOGRAPH c0-,.WASH|NOTON. n. c.

WITNESSES:

JOHN F. WARNER, MUN CIE, INDIANA.

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Specification of Letters Patent.

Patented NOV. 18, 1913.

Application filed. January 29, 1912. Serial No. 674,022.

To all whom it may concern:

Be it known that I, JOHN F. WARNER, a citizen of the United States,- residing at Muncie, in the county of Delaware and State of Indiana, have invented certain new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to improvements in pneumatic devices for the cleaning of carpets and like fabrics generally, and has especial reference to that class of machine comprising a cylinder, piston rod and piston, valves, and a dust receptacle and a mouthpiece; the said several parts being so combined and arranged that by a rec1procatory moving of the cylinder, there is produced a continuous suction at the mouth piece, the dust drawn from the surface over which the mouthpiece is moved, beingcaught and retained in the receptacle.

The general object of this invention is to provide improvements in a machine of this class whereby increased efliciency may be had and maintained in the operating of the same.

More specific purposes of the invention are to provide a cylinder and piston which will be simple and economical of construction, durable and not liable to get out of order or repair, and which will be operable with slight friction and capable of being easily opened or taken apart for the purpose of cleaning same.

The above named and other purposes which will become apparent as the nature of my invention 1s better understood, are accomplished by the new construction, combination and arrangement of parts described in this specification, and defined in the appended claims, and illustrated in the accompanying drawings.

In the drawings the several parts of the invention, as they appear in the different having an inturned rim.

line 5-5 and viewed in the direction indicated by the arrow 5 in Fig. 3. Fig. 6 is a detailed view of the hlnge joint between the members of the retention chamber.

The cylinder A made of sheet metal of suitable thickness has a smooth bore and its rims are outturned or flared as shown. On the tubular member shown and which constitutes one of the main elements of this machine, and which member is designated as the piston tube B, is secured a piston head C provided with the packing ring C made of rubber composition or other suitable material and which fits the bore of the cylinder. Blocks D and E secured on the piston tube at each side of the piston head C are provided with openings D and E that register with openings of similar'size in the wall of the piston tube. Flaps D and E made 7 of leather or other suitable material are secured to the blocks and constitute valve clo sures for the saidopenings D and E To constitute bearings for the piston tube and closures for the ends of the cylinder, and to perform additional functions which will presently be referred to, cylinder heads of the peculiar construction shown herein, are provided. The lower head consists of a convex shaped plate F whose edge is curled inwardly and joined to the rim of the cylinder by a soldered or hammered weld. Secured to this plate at the central opening F therein is an annular ring F A ring made of felting or other suitable material such as a soft rubber composition, and stufied into the annular opening between the ring and the piston tube, effectively closes the opening F F and F 3 designate holes in the plate F and whose functions will be pres ently referred to. A plate F 4 designated as a valve plate and which has a central opening F 5 is secured to the inner side of the head plate F. Between these plates is a valve ring G made of soft material such as felt,- and which fits snugly on the piston tube. The head plate I-I having a central opening H and provided with a closure ring H and stuiling ring whereby a bearing for and closure is had at the upper end of the cylinder in the manner as just described for the lower head of the cylinder, has a plain peripheral edge as shown in Fig. 3.

This plate H is provided with the holes H and H The valve plate H secured to the 7 both tubes have head plate H and provided with the central opening H has an annular ledge which fits snugly in the bore of the cylinder.

T o constitute means to bind the upper head plate of the cylinder to place, there is provided a member of the peculiar construction and arrangement shown plainly in Figs. 3 and 4. This member, designated as a head band, consists of a circular metallic band L which is V-shaped in cross sect-ion the lips L and L being adapted to engage the rim of the cylinder and the rim of the head plate H' respectively. The ears L are formed integral with the ends of the head band, and in suitable holes therein a bolt M provided with a wing nut M is disposed. This head band is sufficiently resilient that it may be expanded and slipped over the rim of the head plate H and the rim of the upper endof the cylinder. By screwing down the wing nut M the'head band is constricted the rims being forced together and a closure of the cylinder effected. A handle L formed integral with the said head band constitutes a grip or handle to be used by the operator in moving the cylinder reciprocatingly on the piston tube.

N designates the piston tube handle; its shank N which is screwed into the bore of the piston tube forms a substantial connection and'at the same time constitutes an air tight closure of the upper end of the piston tube. This tubular member B with the several parts arranged and combined therewith as shown is adapted. to have communication with the surface to be cleaned. Such communication being established and a reciprocatory movement of the cylinder being had, the several parts perform the functions to be presently described. The neck tube B constitutes the terminal portion of the piston tube B and on its slightly tapered end may be easily attached a mouthpiece O having a standard form of shank 0 This mouthpiece may be one of a number of mouthpieces having various forms of base portions or months adapted to traverse fabrics of different textures and surfaces of various contour. Between the neck tube B and the said piston tube B, and into which communication, is arranged a receptacle of the construction and which performs the function hereinafter referred to.

From the description thus far, the functions of the several parts are apparent, it being understood that suction is produced whenever the mouthpiece is at contact with the surface to be cleaned. With a downward movement of the cylinder the valve ring G closes the opening F flap E closes, and the air contents of the upper portion of the cylinder pass out through the opening H and theholes H at the same time flap D will have opened and the contents of the piston tube B enter the lower portion of the cylinder. With upward movement of the cylinder the valve ring J closes the opening H flap D closes, the contents of the lower portion of the cylinder pass out through the opening F and holes F at the same time flaps IE will have opened and the contents of piston tube B enter the upper portion of the cylinder. Thus by a reciprocatory moving of the cylinder a powerful and cont-inuous suction is produced at the mouthpiece and the cylinder contents are exhaled through the holes F and H of the lower and upper heads respectively. By the peculiar construction and arrangement of parts constituting the cylinder heads, and of the rings G and J, there is such baffling of the cylinder contents and at the same time such opening and closing of the ends of the cylinder that while there is free exhalation therefrom, escapement of dust is rendered practically impossible.

For the purpose of preventing the entry into the piston tube of dust and particles of grit and dirt sucked through the mouthpiece, and also to afford facility for the retention of such dirt and dust for the purpose of ultimately disposing of same, a retention chamber of the construction shown herein is arranged between the piston tube B and the neck tube B This retention chamber, designated as a dust receptacle, consists of members constructed and separably connected combined and arranged as shown in Figs. 1 and 3. The upper member P cone shaped in form and made of cast or sheet metal has its neck P secured to the lower end of the piston tube. In the circular mouth of this member P is disposed a union ring Q that has a peripheral tongue Q and the peripheral faces of the ring proper are slightly beveled as shown. The cone shaped dust bag R made of canvas or other suitable textile material has its mouth edging secured to the internal face of the union ring by cementing or riveting. The lower member or funnel S of this dust receptacle also is funnel shaped and is of the elongated form as shown. The neck tube B which projects through the lower end of this funnel S has its upper port-ion secured to the wall of the funnel in the manner as shown in Fig. 1 by soldering or riveting and whereby it is held and braced securely in place.

To provide stiffness and rigidity of the mouth of the funnel S so that practicable connection thereof to the union ring Q may be had and a joining thereof to the upper member P may be effected, the rim of the said funnel S is curled over a ring S made of stout wire and which is of proper diameter to fit freely on the union ring Q. It will be seen that when the union ring is set into engagement with the mouth of member P and the mouth of member S isbrought to engagement with the face of the lower side of the union ring, that a drawing toward each other of said members will cause them to tighten on the said union ring.

P designates a latch consisting of a stout spring having its upper portion secured to the Wall of the member P and whose free end is of form to engage the mouthrim of the funnel S and to normally hold same securely in place.

P designates a hinge member secured on the member P and which detachably engages a complemental hinge member S secured on the side and near the edge of the funnel S.

T designates a disk shaped sheet of metallic netting adapted to fit removably inside the union ring and at the mouth of the dust bag. The peak of the cone shaped dust bag, U as shown in Fig. 3, is secured to a central portion of the said netting by a hook or clip V which has an ear V In practising the invention the debris from the surface being traversed, including the coarser particles of dirt and dust are caught by the netting and caused to accumulate in the funnel S, there being ample room in said funnel and the neck tube B being adjacent the upper wall free action of the suction therethfough is not impeded. The dust contents passing the net-ting is caught and retained in the dust bag. Such slight amount of dust as may pass the dust bag is prevented from being exhaled from the cylinder by the operation of the several parts and in the manner hereinbefore described.

To gain access to the interior of the cylinder the head band is loosened and the head plate H is removed; the piston tube'may then be drawn upwardly until the piston head is clear of the upper end of the cylinder.

hat I claim as my invention and desire to secure by Letters Patent is 1. In a machine of the kind described, the combination of a piston tube having a pair of openings in the wall thereof, a closure for one end of the piston tube, a piston head secured on the piston tube at location between the said openings, valves for the said openings, a cylinder capable of being reciprocated on the piston head having its rims flanged, heads to close the end of the cylinder, the head for the lower end of the cylinder being secured thereto, and the said heads being provided with openings therein and with stufling boxes for the piston tube, a valve plate secured to the interior side of each of the-cylinder heads and having a central opening of diameter larger than that of the piston tube, a ring slidingly disposed on the piston tube between each head. and its valve plate and adapted to close the opening in the valve plate, an expansible member to coengage the flange of the cylinder and the rim of the last named head and that is capable of being constricted whereby the said cylinder flange and the rim of the head may be drawn and held securely together.

2. A pump of the kind described comprising a piston tube having a pair of openings in the wall thereof, a piston head secured on the piston tube at location between the said openings, a valve for each of said openings, a cylinder capable of being reciprocated on the piston head, heads to close the ends of the cylinder and which are provided with closed bearings for the piston tube, one of said heads being removable, a valve in each of the said heads, and an expansible member to coengage the end of the cylinder and the rim of the removable head and that is capable of being constricted whereby the said head may be drawn and held securely to the end of the cylinder.

3. A pump comprising a cylinder having its rims flanged, heads for the ends of the cylinder, the head for one end of the cylinder being secured thereto, and each of the said heads being provided with openings therein and with stufling box for the piston, a valve plate secured to the interior side of each of said heads and having a central opening of diameter larger than that of the piston tube, a ring between each head and its valve plate and which is of diameter slightly smaller than said central opening, and an expansible member to coengage the flange of the cylinder and the rim of the head plate and that is capable of being constricted whereby the said cylinder flange and the said head may be drawn and held securely together.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN F. WARNER.

Witnesses:

CAssIUs M. G. SHANKs, THOS. L. RYAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

